Louisville, Kentucky - Law enforcement have identified the gunman in Monday's mass shooting at a bank in Louisville and released the names of the victims along with updates on the ongoing investigation.

Louisville Metro Police Department named 23-year-old Connor Sturgeon as the gunman in Monday's shooting at Old National Bank.

Sturgeon was an employee at the bank for over a year and was recently notified about his impending termination, per CNN. According to the outlet, a source close to the investigation claimed the 23-year-old wrote a note to his parents and a friend about his plan to attack the bank, though it's unclear whether the note was seen before or after the shooting occurred.

Per Sturgeon's LinkedIn page, he previously interned at the same bank for three consecutive summers between 2018 and 2020. Shane Dorrill, a spokesperson for the University of Alabama, confirmed that Sturgeon participated in an accelerated master's program and graduated from the university of December 2020.

At a press conference, Louisville Metro Police Department's (LMPD) interim chief Jacquelyn Gwinn-Villaroel said police received a call about the shooting at 8:35 AM ET and "responded in a timely, quick fashion, and we stopped the threat so that no additional loss of life could be taken."

Gwinn-Villaroel also said the shooter was livestreaming the attack on Instagram. "I will say this, that the suspect was livestreaming," she said. "That's tragic. To know that that incident was out there and captured."

Sturgeon allegedly shot 13 people, killing five, before he was taken down by police. LMPD also released the names and ages of the victims: Tommy Elliott (63), Jim Tutt (64), Josh Barrick (40), and Julianna Farmer (57). A fifth, 57-year-old Deanna Eckert, died in the hospital from her wounds.

Additionally, LMPD revealed that officer Nickolas Wilt was shot in the head and remains in critical condition. "This will be a long complex investigation involving local, state, and our federal partners," Gwinn-Villaroel said.